I had been wondering if anyone has had success using a SuperMicro P3TDE and Tualatin CPUs without modified Tualatins or without a socket 370 adapter? The P3TDE is a dual socket 370 Pentium III board with AGP Pro, PCI-X, and dual channel PC133 memory. The SuperMicro manual mentions support for Pentium III 1400 MHz CPUs with 512K, which I assume are Tualatin PIIIS chips. However, over the past several years, I've only seen these motherboards sold with Coppermine CPUs installed.

Many years back (approx 2011) I had found one of these motherboards on eBay for an agreeable sum. It came with 1 GHz coppermines. It booted fine with the coppermines installed. When I installed dual Tualatins, the board didn't boot up - blank screen. Put the coppermines back in, works fine. I went back and forth with the Tualatin and Coppermines for a few rounds and eventually the board wouldn't even turn on with the coppermines. It would seem that something to do with installing the Tualatins ruined something on the motherboard.

A few weeks ago, I pulled the Supermicro board back out hoping it would come back to life. Well, every CPU I put into the board dies. No smoke, just dead. It killed a 1 GHz coppermine, two 1.1 GHz coppermines (the 1100/100's), and a 600 Mhz coppermine.

My questions are:

1) Has anyone been able to get Tualatins working on this motherboard without any modifications or adapters?
2) What aspect of the motherboard got injured after testing Tualatin CPUs and how to fix this?